Question

Two particles are moving with velocities $v_1$ and $v_2$.Their relative velocity is the maximum, when the angle between their velocities is:

• A. zero
• B. $\pi /4$
• C. $\pi /3$
• D. $\pi$

Answer 1

The correct option is D $\pi$

The relative velocity of one body w.r.t. other body is maximum if they move in opposite direction. Thus the angle between their velocities must be $\pi$ so that their relative velocity is maximum.